干海带，海带中汞检测方案(测汞仪)

PAGE 1 Application Note APPN-MA-3000-FOOD-002 BACKGROUND Kelps are large seaweeds (algae) belonging to the brown algae that grow in underwater forests (kelp forests) in shallow oceans. Kombu(昆布 in Japanese， and 海带 in Chinese， Saccharina japonica and others)， is a very important ingredient in Chinese， Japanese， andKorean cuisines. Kombu is used to flavor broths and stews， as a savory garnish for rice and other dishes， as a vegetable， and a primaryingredient in popular snacks. Dried kelp is also sold in the Western world as a dietary herbal supplement. Lessonia nigrescens andLessonia trabeculata kelps have been found to be highly absorptive of mercury from aqueous solutions. Also， high levels of mercuryin kelp supplements have be widely reported. Mercury is dangerous to both natural ecosystems and humans because it is highly toxic，especially due to its ability to damage the central nervous system. Mercury poses a particular threat to human development in utero andin early childhood. Thus， to prevent mercury poisoning， it is necessary to accurately quantify total mercury in kelp and kelp products thatenter the food chain. REFERENCES · WHO HP： http：//www.who.int/ipcs/assessment/public_health/mercury/en/ ·UNEP HP： MINAMATA CONVENTION ON MERCURY： http：//www.mercuryconvention.org/Convention/tabid/3426/Default.aspxFDAHP：http：//www.fda.gov/Food/FoodbornelllnessContaminants/Metals/ucm393070.htm · WIKI： https：//en.wikipedia.org/wiki/Kelp ·DOI： https：//link.springer.com/article/10.1007/s12010-010-8912-5 INSTRUMENT NcMA-3009 NIC MA-3000 is a dedicated direct mercury analyzer that selectively measures total mercury bythermal decomposition， gold amalgamation and cold vapor atomic absorption spectroscopy， onvirtually any sample matrix- solid， liquid， and gas. The MA-3000 offers quick results without anytedious， time-consuming and elaborate sample preparation process. It is a perfect solution totoday’s increasing laboratory demand for easy， fast and accurate mercury measurements. MA-3000直接燃烧法在食品行业测定干海菜中总汞的应用背景海带是生长在浅海水下森林(海带森林)中的褐藻中的大型海藻(藻类)。在中国,日本和韩国的美食中，海带是一个非常重要的原料，海带被用来调味肉汤和炖菜，作为米饭和其他菜肴的美味配菜，作为一种蔬菜，也是流行小吃的主要成分。干海带在西方世界也作为膳食草药补充剂出售。黑斑海带和海带对水溶液中汞的吸收能力强。此外，海带补充剂中汞含量高已被广泛报道。汞对自然生态系统和人类都是危险的，因为它具有高度毒性，特别是由于它能够破坏中枢神经系统。汞对人类在子宫内和儿童早期的发育构成特别的威胁。因此，为了防止汞中毒，有必要准确量化海带及进入食物链的海带产品中的总汞含量。NIC公司 MA-3000是一款专用的直接汞分析仪，通过热分解、金汞齐化和冷原子吸收光谱有选择地测量几乎任何样品基质(固体、液体和气体)的总汞。MA-3000提供快速测试的结果，没有任何繁琐、耗时和复杂的样品制备过程。这是一个理想的解决方案，以满足当今实验室对简单，快速和准确的汞测量的需求。